John joseph link



Nrrnn STATES PATENT innen.

' LOCK.v

SPECIFICATION forming part of Letters Patent No. 591,479, dated October 12, 1897.

Application ma May 27,1897.

serial No. 638,331. (No man.)

T @ZZ whom it may concern: v

Be it known that I, JOHN JOSEPH LINK, a citizen of the United,States,vresiding at the city of St. Louis, inthe State o fMissouri, have invented a certain new and useful Lock, of which the following is such a full, clear, and eXact description asl `will enable' any one skilled in the art to which it appertains to make and use fthe-same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates toa lock, and more particularly to that class of locks known as latch-locks, in which the lock is operated from one side by a key and from either one or both sides by a knob or knobs.

` The object-s of my invention are to providev a lock which is simple of construction, to provide means for throwing one of the knobs out of engagement with the lock, to improve the construction of the key-cylinder, and to provide means for giving an alarm when the door is opened.

My invention consists in the various novel features and details of construction which are described in Vthe following specification, and pointed out in the claims affixed hereto.

In the accompanying drawings,which illus? trate one form of lock made in accordance with my invention, Figure 1 is a side elevation of the lock, the key-cylinder and half of the casing being removed, and a section of a portion of the door-frame. Fig. 2 is a vertical section on the line 2 2 of Fig. 1, the keycylinder and the entire casing being in position. Fig. 3 is a section on the line 3 3 of Fig. 1,*showing the lock complete and mortised in a door. Fig. 4 is an elevation of the inner door-plate. Fig. 5 is a side elevation of the key-cylinder. Fig. 6 is a longitudinal section of the key-cylinder. Fig.7 is a view similar to Fig. 6, but showingthe key inserted in the cylinder. Figl 8 is a sectionon the line 8 8 of Fig. 6,. `Fig.9 is a view similar to Fig. 8, but looking in the opposite direction. Fig. 10 is a View showing the surface of the key developed. Fig. 11 is a section on the line 11 11 of Fig. 1, and Fig. 12 is a section on the line 12 12 of Fig. 1. Figs. 6 to 10, inclusive,

are on an enlarged scale.

Like marks of reference refer to similar 'parts in the several views of the drawings.

The casing of the lock is composed of two .similar parts 15 and 16. On the part 15 are formed two thickened portionsor blocks 17, towhich are secured by means of screws 18 two lugs, 19, formed on the selvage or edge plate 2() .of vthe lock. On the part 15 is formed a projection 2l, having a semicylindrical recess for the reception of a bolt, to be hereinafter described. In the projection 21 is a threaded hole 22. On the part 16 is a projection 23 similar to the projection 21 and provided with a hole, through which passes a screw24, (shown in dotted line in Fig. 2,) whichengages with the threaded hole 22, and thus` holds the two parts of the casing toget-her. On the projection-21 is an extension 25, which acts as a stop to limit the motion of the bolt in one direction. On the part 15 is also formed a stop 26, (best shown in Fig. 12,) which has a lateral extension 27.

29 is a rotary bolt which slides between the projections 21 and 23. On the bolt 29 is an enlarged portiony 30, which projects through the selvage and is provided with an inclined face, which is so adjusted as to partially rotate the bolt when it comes. in contact with the striking-plate, as isfully described in Patent No. 549,143, granted vto me November 5, 1895. The enlarged portion 30 is secured to the bolt 29 by a screw 3l, and l by loosening the said screw it can be adapted to either a right or left hand door. On the bolt 29 is a downward projection 32, which engages with the stop 25 to limit the forwardY motion of the bolt and also when in its normal position engages with the stop 26 to prevent the backward motion of said bolt.

33 is a coil-spring, one end of which is secured in the enlarged portion 30 of the bolt 29 and the other in the projection 21. Y The spring 33 holds the bolt 29 in its normal position, both with respect to its sliding and its rotary motion. AOnthe bolt 29 is formed a substantially U -shaped portion 34. The free end of the 'U -shaped'l portion 34 is provided with a rounded part 35 and Ahas formed in it a recess or notch 36, Fig. l1. At the opposite end of the portion 34 is a shoulder 37 and at its center a rounded depression 38. Journaled in the parts 15 and 16 and passing between the arms of the U-shaped part 34 is a cylinder'39. On the cylinder 39 are two pro- IOO jections 40 and 41, which have rounded surfaces and are adapted to engage with the rounded portion 35 and the depression 38, respectively. On the cylinder 39 is also formed a segment of a disk 42, which engages with the recess 36. Passing through the cylinder 39 isa square opening 43.

44 is a small coil-spring, one end of which is attached to the case 15 and the other to the projection 41.

45 and 46 are two side plates, which are held in position by screws or bolts 47, passing through the plate 45 and door 48 and screwing into projection 49 on the plate 46. On the plate 46 is a sleeve 50, through which passes the shank 51 of a knob 52. The shank 5l is held in place by a collar 53 and has formed through it a square opening 54. On the plate 45 is a sleeve 55, through which passes the shank 56 of a knob 57. In the shank 56 are two circumferential grooves 58 and 59, and upon its end is a collar 60, which prevents it from being withdrawn from the sleeve 55.

Secured in the shank 56 is a square bar 6l, which passes through the cylinder 39 and has at its end a cylindrical portion 62. Pivoted to the plate 45 at points 63 are two plates or strips 64. The upper ends of the strips 64 slide in a guide 65 and are drawn toward each other by a small coil-spring 66. The strips 64 are so shaped as to partially surround the shank 56, and by entering one of the circumferential grooves 58 or 59 prevent the longitudinal motion of said shank and attached parts. Passing through the plate 45 and between the strips 64 is a small rod 67, having a liattened head or thumb-piece 68.

Secured on the rod 67 is a small oval piece 69, which forces the strips 64 apart when the thumb-piece 68 is turned. On the rod 67 is also secured a cylinder-plate 70, which prevents t-he strips 64 from slipping olf the pivots 63. 71 are stops to limit the motion of the strips 64.

In each of the plates l5 and 16 of the casing is a circular opening 73 for the reception of the key-cylinder.

74 is the shell or case of the key-cylinder. The shell 74 is provided with a ange 75, and its Walls are thickened near the end, so as to form an internal flange or shoulder 76 and leave an opening 77 onlylarge enough to easily admit the key. lVithin the case 74 is a rotary part or barrel 78. Carried by the barrel 78 is a bit 79, which moves in a slot extending almost around the case 74. lVhen the barrel 78 is rotated, the bit 79 engages with a curved lateral arm 80, Fig. 1, on the downward projection 32 of the bolt 29. The barrel 78 is held in place by a disk or short cylinder 8l in the end of the case 74. In the barrel 78 is a circular opening 82 of the same size as the opening 77 in the case 74, in the center of which is a square bar 83. Around the opening 82 and intersecting it are a number, preferably four, of smaller openings 84. In the center of the openings 84 are still smaller openings 85, and corresponding openings 86 and 87, respectively, are made in the shoulder 76 and the disk 8l. In each of the openings is a rod 88 exactly the length of the barrel 78. On the rods 88, at varying distances from the ends, are formed collars 89 of such a size as to slide in the openings 84. Around each of the rods 88 is a small coil-spring 90, which normally forces the ends of the said rods into the openings 86 and thus prevents the rotation of the barrel. The key 91 is cylindrical and has in its end an opening for the reception of the square bar 83. Around the key are a number of depressions 92 of such depths that when the key is inserted in the cylinder the rods 88 will be withdrawn from-the openings 86, but not projected into the openings 87. On the key is a small projection 93,which slides in a corresponding groove 94in the keycylinder, and thus insures the proper insertion of the key. On the flange 75 are two pins 94, which enter holes 94J in the casing and thus prevent the shell 74 from rotating. The holes 94b are made in both sides of the casing, so as to allow the cylinder to be inserted from either side and thus adapt thc lock for either a right or left hand door.

In order to give an alarm when the door is opened, the lock may be provided with a device like that shown in Fig. 1. An electrical conductor 95 is carried by but insulated from the selvage 20. The conductor 95 extends through and is flush with the face of the said selvage. A conductor 96 is carried by the bolt 29 in such a position that when the bolt is in its normal position the said conductor is out of contact with the conductor 95, but when the bolt is rotated the conductors will be brought in contact. Carried by a plate 97, secured in the door-frame, is a tube of insulating material 98. In the tube 98 is a small metallic rod 99, which is pressed against the end of the conductor 95 by a small coil-spring 100 when the door is closed. Projecting through a slot 101 in the tube 98 is a small rod 102, to which is attached a rod 103, parallel to the rod 99, one end of which will be forced against the plate 97 by the action of the spring 100 when the door is open, and the other end of which will be forced against the rear of the chamber 104, into which the bolt projects if the rod 99 is pressed too far into the tube 98. To the coil-spring 100 is attached one terminal of an electric circuit 105, the other end of which is attached to the plate 97. In the circuit 105 is a suitable source of electrical energy 106 and a bell 107 or other suitable alarm.

The operation of my lock is as follows: When one of the knobs is rotated, the motion is communicated through the bar 61 to the cylinder 39. If the cylinder 39, Fig. 1, is rotated toward the right, thc projection 40 comes in contact with the rounded end 35 oi' the U -shaped part 34 and forces the said part 34 toward the part l5 of the case. This par- IOO IIO

i ,A l

tially rotates the bolt 29 and throws the downward projection 32 away from the part 15, so that it does not come in contact with the main A'part of the stop 26 and thus leave's the bolt free to move longitudinally. The segment 42 then engages with the recess 36, Fig. 11, and by the further rotation of the knob throws the bolt backward. When the bolt has been thrown far enough back, the projection 32 comes in contact with the lateral extension 27 of the stop 26 and thus prevents any further movement. If the cylinder is rotated in the opposite direction, the projection 41 will force the part 34 toward the case 15 to release the bolt by its contact with the curved portion 38 of the said part 34, after which the segment 42 will come in Contact with the shoulder 37 and force the bolt back. Fig. 3 shows the normal position of the part 34, and Fig. 2 its position when it has been'moved to release the bolt. l

When itis desired tothrow the knob 52 (the outside knob) out of operation, the thumb-piece 68 is vpartially rotated to separate the plates 64 and thus take them out of engagement with the groove 58, and the knob 57 pulled out until the plates 64 fall into engagement with the groove 59. This draws the square part of the bar 61 out of the shank 51 of the knob 52 and allows the knob 52 to be turned without affecting the lock,'as the shank 51 simply slides around the cylindrical portion 62.

. Vhen the key 9l'is inserted in the keycylinder, the shoulders formed on the key by the cut-away portion 92 come in Contact with the collars 89 on the rods 88 and force the rods out of the openings 86 into the barrel 78. If one'of the grooves 92 should be too long, the rod 88 upon which it acted would not be forced 4out of the opening 86, and if too short the end of the said rod would be forced into one of the openings 87. After the key has been inserted in the cylinder and the barrel 78 thus released the key is rotated and with it the barrel. The bit 79 comes in contact with thecurved arm 80, Fig. 1, and rotates the bolt 29 to release the same, as hereinbefore described. The bit 79 then comes in contact with the projection 32 and throws the bolt back.

Whenever the bolt 29 is rotated the conductor 96 is brought in contact with the conductor 95, thus completing the circuitthrou gh the alarm 107, the current passing along the wire 105, spring 100, rod 98, conductor 95, and conductor 96, from which it passes to the bolt 29, and thence th rough the metallic parts A of thelock to the plate 97, to which the linestop the alarm,it will nearly always be pressed back too far, in which case the rod 103 will screw 31 and rotating the portion 30 of the bolt half a revolution and withdrawing the keyfcylinder from the casing and replacing it from the opposite side. In securing the lock in the door the plate 45 is always placed on the inside face of the door.

Having-f Lilly described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a lock, a rotating bolt, dogging de` vices normally locking said bolt against longitudinal motion, a substantially U-shaped member carried by said bolt, a rotary member situated between the arms of said U- shaped member, devices carried by said rotary member and acting upon said U-shaped member to rotate said bolt to release the dogging devices therefrom and to throw said bolt, and means for actuating said rotary member.

2. In a lock, a sliding bolt, a rotary member provided with means for throwing said bolt, a stationary casing for said rotary member, suitable rods carriedy by said rotary member and parallel to its axis, openings in said casing for the reception of the ends of said rods, springs normally pressing said rods into said openings, the forward ends of said pins or rods being covered by said stationary casing, and suitable projections on said pins or rods for engagement with a key.

3. In a lock, a sliding bolt, a rotary member provided with means for throwing said bolt, a stationary casing for said rotary member, rods or pins carried by said rotary member, a set of openings in said casing, springs normally pressing said pins into said openings, a second set of openings in said casing and into which said pins will be pressed if theyare moved more thanv a predetermined amount from their normal position, the forward ends of said pins or rods being covered by said stationary' casing, and suitable projections on said pins for the engagement of a key.

4. In a lock, a sliding bolt, a rotary member provided with means for throwing said bolt, a stationary casing for said rotary member, an opening in said rotary member for the reception of a key, pins or rods carried in said rotary member around said opening, the forward ends of said pins or rods being covered Aby said stationary casing, projections adapted to be engaged by a key carried by said pins and extending into said opening, and openings in said casing into which said pins will project to lock said rotary part against motion except when said` pins are in a predetermined position.

5. In a lock, a sliding bolt, a rotary member provided with means for throwing said bolt, a stationary casing for said rotary mein-V IOO IIO

ber, an opening in said rotary member for the reception of a key, pins or rods carried in said rotary member around said opening, the forward ends of said pins or rods being covered by said stationary casing, projections adapted to be engaged by a key and carried by said pins or rods and extending into said opening, openings in said casing into which said pins project to lock said rotary member against motion except When said pins are in a predetermined position, and a central pin or bar carried by said rotary member and determining the distance to Which the key can be inserted into the lock.

C. In a lock, a lock-case carried bya door, a plate of conducting material carried bythe door-frame and normally in contact with said lock-case, a suitable conductor carried by but insulated from said lock-case, means for JOHN JOSEPH LINK.

Vitnesses:

J. CLARENCE TAUssIc, W. A. ALEXANDER. 

